Arista QSFP-100G-CWDM4 100GB BASE-CWDM4 SMF QSFP28 Transceiver

The Arista QSFP-100G-CWDM4 is a QSFP28 100GBASE-CWDM4 optical transceiver for 100G links over duplex single-mode fiber. It transmits at 1271, 1291, 1311, and 1331nm. It reaches up to 2 kilometers and uses a duplex LC connector.

Arista lists it as dual rate, so it also runs at 40G. Use a matching 100GBASE-CWDM4 optic at the far end of the link unless Arista lists the pairing above, and use single-mode patch cables.

If you need a different reach, the QSFP-100G-SR4 100GBASE-SR4 transceiver and the QSFP-100G-SWDM4 100GBASE-SWDM4 transceiver are also available. A new QSFP-100G-CWDM4 is also available.

Arista publishes a transceiver compatibility guide that lists which switch platforms and EOS releases support each module, so check it for your switch before you order.

Single-mode fiber is normally run in yellow jacketed patch cables, so check that every patch cord and panel in the path is single-mode before you connect it.

Keep the dust caps on the optic and the fiber until you are ready to connect them, and clean the connector end faces before you plug them in. Most failed optical links come down to a dirty connector.

This seller refurbished QSFP-100G-CWDM4 is tested, working, and covered by the NetworkTigers one-year warranty.